Liu 2003 Green Roofs

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Liu 2003 green roofs.

Green roofs have excellent noise attenuation especially for low frequency sounds. Green roofs are often indicated as a valuable solution for resolving the issue of the lack of green space in urbanized areas in fact efficiently designed and integrated green roofs are valid alternatives to replace the lost green spaces and habitats in modern cities and support life behaviors within nature however based on current literature the energy related performance of green roofs. Green roofs offer energy savings by decreasing the demand for space conditioning. Greening rooftops for sustainable communities chicago.

Of 1st north american green roof conference. Thermal performance of extensive green roofs in cold climates karen liu ph d1 bas baskaran ph d2 1 institute for research in construction national research council building m20 1200 montreal road ottawa ontario k1a 0r6 canada karen liu nrc cnrc gc ca. 2003 that dense green roof application may reduce the energy demand in the summer by over 75 percent. Typical green roof peak flow delays range from 1 hours liu 2003 to 4 hours moran hunt et al.

An extensive green roof can reduce sound from outside by 40 decibels while an intensive green roof can reduce sound by 46 50 decibels peck et al. Misc etde 20398190 title thermal performance of green roofs through field evaluation author liu k and baskaran b abstractnote the thermal performance of a roofing system can be improved through shading insulation evapotranspiration and thermal mass by using a green roof. This paper evaluates the environmental benefits of green roofs by comparing emissions of no2 so2 o3 and pm10 in green roof material manufacturing process such as polymers with the green roof. Green roofs can be traced back as far as the gardens of babylon and the roman empire i e.

It was compared with an adjacent conventional roof of the same size. The green roof had 15 centimeters of growing medium and was planted with lawn grasses liu and baskaran 2003. It is estimated by liu et al. Liu k baskaran b 2003 thermal performance of green roofs through field evaluation.

Green roofs are capable of reducing electromagnetic radiation penetration by 99 4 herman 2003.